var strColumns_Current = "140,10,*";
var strColumns_Current1 = "*,10,190";

function hideleft()
  {
  
  strColumns_Current = top.mainframeset.cols
  top.mainframeset.cols = "0,10,*";
  //top.contentbar.document.all("showtoc").style.display = "block";
  }

function showleft()
  {

  top.mainframeset.cols = strColumns_Current;
  //top.contentbar.document.all("showtoc").style.display = "none";
  }

function hideright()
  {
  strColumns_Current1 = top.centerframeset.cols
  top.centerframeset.cols = "*,10,1";
 // top.contentbar.document.all("showtoc").style.display = "block";
  }

function showright()
  {
  top.centerframeset.cols = strColumns_Current1 ;
  //top.contentbar.document.all("showtoc").style.display = "none";
  }